Commit Graph

1341 Commits

Author SHA1 Message Date
hlopko
6d1f7282af Use EmbedderHeapTracer instead of object grouping when embedder sets the heap tracer.
When the embedder sets the heap tracer, V8, during marking, will collect all reachable wrappers, and then ask embedder to trace its heap. The embedder is expected to call PersistentBase::RegisterExternalReference with all wrappers reachable from the given ones. This fixed point iteration happens in MarkCompact::ProcessEphemeralMarking.

For more efficient object visiting during marking, we need a special JS_API_OBJECT_TYPE (in tandem with already existing JS_SPECIAL_API_OBJECT_TYPE) and corresponding visitor (JSApiObjectVisitor).

BUG=chromium:468240
LOG=no

Review URL: https://codereview.chromium.org/1844413002

Cr-Commit-Position: refs/heads/master@{#35412}
2016-04-12 10:33:27 +00:00
jochen
b3d793e48a [api] Introduce ReturnValue::Get
This is a convenience API that an embedder can use to do final checks on
the return value. Note that this creates a new handle and thus defeats
the performance optimization done for ReturnValue - an embedder should
only use this in non-performance critical code paths.

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/1875263003

Cr-Commit-Position: refs/heads/master@{#35409}
2016-04-12 09:34:12 +00:00
hablich
70c4216bc8 Update version to 5.2
R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1876723002

Cr-Commit-Position: refs/heads/master@{#35375}
2016-04-11 09:28:53 +00:00
verwaest
d2eb555ee1 Use a dictionary-mode code cache on the map rather than a dual system.
The previous code cache system required stubs to be marked with a StubType, causing them to be inserted either into a fixed array or into a dictionary-mode code cache. This could cause names to be in both cases, and lookup would just find the "fast" one first. Given that we clear out the caches on each GC, the memory overhead shouldn't be too bad. Additionally, the dictionary itself should just stay linear for small arrays; that's faster anyway.

This CL additionally deletes some dead IC code.

BUG=

Review URL: https://codereview.chromium.org/1846963002

Cr-Commit-Position: refs/heads/master@{#35291}
2016-04-06 10:06:30 +00:00
kozyatinskiy
725672512a [V8] Removed debugger V8::PromiseEvent
We decided to remove related devtools experiment.

BUG=chromium:526811
LOG=Y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1833563002

Cr-Commit-Position: refs/heads/master@{#35275}
2016-04-05 18:13:02 +00:00
jochen
e1674a24ca Revert of [api] Restrict Template::Set to take templates or primitive values (patchset #1 id:1 of https://codereview.chromium.org/1839983002/ )
Reason for revert:
Breaks node.js

Original issue's description:
> [api] Restrict Template::Set to take templates or primitive values
>
> Embedders that passed in non-primitive values should either use
> getters/setters (templates) or install a native data property,
> otherwise, the values would all result in cross-context leaks
>
> BUG=none
> R=verwaest@chromium.org
> LOG=y
>
> Committed: https://crrev.com/eebdee8eafa97849cc70c25f3fecf1b075bac248
> Cr-Commit-Position: refs/heads/master@{#35244}

TBR=verwaest@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=none

Review URL: https://codereview.chromium.org/1860003002

Cr-Commit-Position: refs/heads/master@{#35264}
2016-04-05 14:15:36 +00:00
jochen
eebdee8eaf [api] Restrict Template::Set to take templates or primitive values
Embedders that passed in non-primitive values should either use
getters/setters (templates) or install a native data property,
otherwise, the values would all result in cross-context leaks

BUG=none
R=verwaest@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1839983002

Cr-Commit-Position: refs/heads/master@{#35244}
2016-04-04 16:58:40 +00:00
jochen
cb7aa79b12 Expose a lower bound of malloc'd memory via heap statistics
We expect that the majority of malloc'd memory held by V8 is allocated
in Zone objects. Introduce an Allocator class that is used by Zones to
manage memory, and allows for querying the current usage.

BUG=none
R=titzer@chromium.org,bmeurer@chromium.org,jarin@chromium.org
LOG=n
TBR=rossberg@chromium.org

Review URL: https://codereview.chromium.org/1847543002

Cr-Commit-Position: refs/heads/master@{#35196}
2016-04-01 10:01:56 +00:00
hlopko
289f382497 Introduce EmbedderHeapTracer
BUG=468240
LOG=no

Review URL: https://codereview.chromium.org/1815153002

Cr-Commit-Position: refs/heads/master@{#35162}
2016-03-31 13:38:29 +00:00
mlippautz
21f1dfe916 [heap] Remove store buffer top from roots
Change x64 to use the external references like all other platforms.

BUG=chromium:581076
LOG=N

Review URL: https://codereview.chromium.org/1844283002

Cr-Commit-Position: refs/heads/master@{#35160}
2016-03-31 11:16:26 +00:00
ishell
037f7f6215 [api] Add a switch that controls if ES2015 tail call elimination feature is enabled or not.
BUG=v8:4698
LOG=N
TBR=rossberg@chromium.org

Review URL: https://codereview.chromium.org/1842763002

Cr-Commit-Position: refs/heads/master@{#35132}
2016-03-30 11:05:19 +00:00
ulan
bb9b74e754 Add memory pressure notification API
Based on CL 1777883002.

BUG=chromium:590975
LOG=NO

Review URL: https://codereview.chromium.org/1813963002

Cr-Commit-Position: refs/heads/master@{#35053}
2016-03-24 09:53:11 +00:00
jfb
890f3dd7c5 Use C++11 / gnu++11, not 0x
Cleanup, and matches Chromium's build.

Review URL: https://codereview.chromium.org/1820583002

Cr-Commit-Position: refs/heads/master@{#34993}
2016-03-22 15:24:43 +00:00
vogelheim
09ac4f295c Revert of Parser: Make skipping HTML comments optional. (patchset #6 id:140001 of https://codereview.chromium.org/1801203002/ )
Reason for revert:
Violates ES6 spec (crbug.com/4850), and implementation was over-eager. Will revert for now.

Original issue's description:
> Parser: Make skipping HTML comments optional.
>
> API change: This adds a new flag skip_html_comments to v8::ScriptOriginOptions. This flag controls whether V8 will attempt to honour HTML-style comments in JS sources.
>
> (That is: Gracefully ignore <!-- ... ---> in JS sources, which was a popular technique in the early days of JavaScript, to prevent non-JS-enabled browsers from displaying script sources to uses.)
>
> The flag defaults to 'true' when using v8::ScriptOrigin constructor, which preserves the existing behaviour. Embedders which are happy with the existing behaviour will thus not need any changes.
>
> BUG=chromium:573887
> LOG=Y
>
> Committed: https://crrev.com/91d344288aa51ed03eaaa1cb3e368ac1e82f0173
> Cr-Commit-Position: refs/heads/master@{#34904}

TBR=jochen@chromium.org,rossberg@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:573887, v8:4850
LOG=Y

Review URL: https://codereview.chromium.org/1817163003

Cr-Commit-Position: refs/heads/master@{#34958}
2016-03-21 17:50:22 +00:00
jochen
2a1570ef1a Temporarily undeprecate ForceSet
I first need to figure out what to do about window.document before we
can deprecate this: window.document is a regular accessor, however, once
the window navigated from about:blank, its value will never change.
Blink uses ForceSet to then replace the accessor with a data constant
which has way better performance than invoking the accessor all the
time.

Since the accessor, however, is installed as read only &
non-configurable, there is no spec compliant way to pull this off right
now

BUG=chromium:595601
R=verwaest@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1816033002

Cr-Commit-Position: refs/heads/master@{#34919}
2016-03-21 07:53:23 +00:00
vogelheim
91d344288a Parser: Make skipping HTML comments optional.
API change: This adds a new flag skip_html_comments to v8::ScriptOriginOptions. This flag controls whether V8 will attempt to honour HTML-style comments in JS sources.

(That is: Gracefully ignore <!-- ... ---> in JS sources, which was a popular technique in the early days of JavaScript, to prevent non-JS-enabled browsers from displaying script sources to uses.)

The flag defaults to 'true' when using v8::ScriptOrigin constructor, which preserves the existing behaviour. Embedders which are happy with the existing behaviour will thus not need any changes.

BUG=chromium:573887
LOG=Y

Review URL: https://codereview.chromium.org/1801203002

Cr-Commit-Position: refs/heads/master@{#34904}
2016-03-18 17:24:19 +00:00
yangguo
f507bc1c72 [serializer] Add API to warm up startup snapshot with an additional script.
A startup snapshot is considered cold when it does not contain any
function code. We can now create a warm startup snapshot from a cold one
by running a warm-up script. Functions exercised by the warm-up script
are compiled and its code included in the warm startup snapshot. Side
effects caused by the warm-up script does not persist.

R=vogelheim@chromium.org
BUG=v8:4836
LOG=Y

Review URL: https://codereview.chromium.org/1805903002

Cr-Commit-Position: refs/heads/master@{#34849}
2016-03-17 10:34:16 +00:00
littledan
4ea11ca941 Add UseCounters for various RegExp compatibility issues
We have compatibility workarounds to return 'undefined' on accessors
to RegExp.prototype. This patch adds two UseCounters for two categories
of this non-spec-compliant path:
- source
- ignorecase, multiline, global

R=yangguo
BUG=chromium:581577
LOG=Y

Review URL: https://codereview.chromium.org/1762423002

Cr-Commit-Position: refs/heads/master@{#34597}
2016-03-08 19:14:23 +00:00
dgozman
9a1387f6a9 Introduce v8::MicrotasksScope.
This scope is used to control microtasks execution when MicrotasksPolicy::kScoped is engaged.

Attempt #2. First one was reverted due to chromium breakage: SetAutorunMicrotasks(false) was broken.

BUG=chromium:585949
LOG=Y
TEST=ScopedMicrotasks

Review URL: https://codereview.chromium.org/1741893003

Cr-Commit-Position: refs/heads/master@{#34504}
2016-03-04 17:42:17 +00:00
haraken
10f6a9e62b Use a different GCCallbackFlag for GCs triggered by CollectAllAvailableGarbage
Blink wants to distinguish GCs triggered by CollectAllAvailableGarbage
from GCs forced by testing. This CL introduces a new flag to differentiate
the two GC types.

BUG=591463
LOG=Y

Review URL: https://codereview.chromium.org/1757263003

Cr-Commit-Position: refs/heads/master@{#34494}
2016-03-04 13:06:25 +00:00
verwaest
683223b4ba Reland "Speed up the LookupIterator"
BUG=

Review URL: https://codereview.chromium.org/1765713003

Cr-Commit-Position: refs/heads/master@{#34492}
2016-03-04 11:53:24 +00:00
machenbach
043345a621 Revert of Introduce v8::MicrotasksScope. (patchset #6 id:100001 of https://codereview.chromium.org/1741893003/ )
Reason for revert:
[Sheriff] Speculative. Seems to break a bunch of webkit tests and causes timeouts:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/5103

Please rebase upstream if intended.

Original issue's description:
> Introduce v8::MicrotasksScope.
>
> This scope is used to control microtasks execution when MicrotasksPolicy::kScoped is engaged.
>
> BUG=chromium:585949
> LOG=Y
> TEST=ScopedMicrotasks
>
> Committed: https://crrev.com/db77cec242dbdf8ee26da8232fa930270429f253
> Cr-Commit-Position: refs/heads/master@{#34472}

TBR=jochen@chromium.org,adamk@chromium.org,dgozman@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:585949

Review URL: https://codereview.chromium.org/1762943002

Cr-Commit-Position: refs/heads/master@{#34480}
2016-03-04 07:31:17 +00:00
dgozman
db77cec242 Introduce v8::MicrotasksScope.
This scope is used to control microtasks execution when MicrotasksPolicy::kScoped is engaged.

BUG=chromium:585949
LOG=Y
TEST=ScopedMicrotasks

Review URL: https://codereview.chromium.org/1741893003

Cr-Commit-Position: refs/heads/master@{#34472}
2016-03-04 04:02:37 +00:00
littledan
0e7f095c6d Restrict FunctionDeclarations in Statement position
ES2015 generally bans FunctionDeclarations in positions which expect a Statement,
as opposed to a StatementListItem, such as a FunctionDeclaration which constitutes
the body of a for loop. However, Annex B 3.2 and 3.4 make exceptions for labeled
function declarations and function declarations as the body of an if statement in
sloppy mode, in the latter case specifying that the semantics are as if the
function declaration occurred in a block. Chrome has historically permitted
further extensions, for the body of any flow control construct.

This patch addresses both the syntactic and semantic mismatches between V8 and
the spec. For the semantic mismatch, function declarations as the body of if
statements change from unconditionally hoisting in certain cases to acquiring
the sloppy mode function in block semantics (based on Annex B 3.3). For the
extra syntax permitted, this patch adds a flag,
--harmony-restrictive-declarations, which excludes disallowed function declaration
cases. A new UseCounter, LegacyFunctionDeclaration, is added to count how often
function declarations occur as the body of other constructs in sloppy mode. With
this patch, the code generally follows the form of the specification with respect
to parsing FunctionDeclarations, rather than allowing them in arbitrary Statement
positions, and makes it more clear where our extensions occur.

BUG=v8:4647
R=adamk
LOG=Y

Review URL: https://codereview.chromium.org/1757543003

Cr-Commit-Position: refs/heads/master@{#34470}
2016-03-03 21:34:26 +00:00
machenbach
70ac41a84a Revert "Speed up the LookupIterator"
This reverts commit 2608ecc715.

Revert "Specialize helper methods in the LookupIterator by is_element."

This reverts commit 6eb483f878.

Revert "Avoid SetPropertyInternal if the LookupIterator is NotFound"

This reverts commit ca5bd8d4a9.

Revert "Inline fast-bailout-checks for LookupIterator::UpdateProtector"

This reverts commit d98570a1eb.

This breaks layout tests with timeouts:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/5060

It also seems to break jsfunfuzz:
https://build.chromium.org/p/client.v8/builders/V8%20Fuzzer/builds/7930

The other three CLs are reverted to be able to revert the first.

BUG=v8:4798
LOG=n
TBR=verwaest@chromium.org

Review URL: https://codereview.chromium.org/1761593003

Cr-Commit-Position: refs/heads/master@{#34457}
2016-03-03 08:12:03 +00:00
verwaest
2608ecc715 Speed up the LookupIterator
This introduces a new instance type and reorders the JSObject types so any type requiring special LookupIterator support can be identified with a single range check.

In addition, it restructures the Next for better performance, avoiding unnecessary calls.

BUG=

Review URL: https://codereview.chromium.org/1751043002

Cr-Commit-Position: refs/heads/master@{#34429}
2016-03-02 13:49:11 +00:00
fmeawad
f3fcdcfa1a [Tracing] Remove deprecated AddTraceEvent
This should land after the chromium CL that starts using the new AddTraceEvent lands
(https://codereview.chromium.org/1742603004/)

BUG=4565
LOG=N

Review URL: https://codereview.chromium.org/1744733002

Cr-Commit-Position: refs/heads/master@{#34412}
2016-03-01 21:20:48 +00:00
bmeurer
d1df58e8d7 [stubs] Introduce a proper ToBooleanStub.
Rename the existing (patching) ToBooleanStub to ToBooleanICStub to match
our naming convention, and add a new TurboFan-powered ToBooleanStub,
which just does the ToBoolean conversion without any runtime call or
code patching, so we can use it for Ignition (and TurboFan).

Drive-by-fix: Add an Oddball::to_boolean field similar to the ones we
already have for to_string and to_number, so we don't need to actually
dispatch on the concrete Oddball at all.

R=epertoso@chromium.org, rmcilroy@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/1744163002

Cr-Commit-Position: refs/heads/master@{#34361}
2016-02-29 12:17:26 +00:00
jochen
e8c914f18f [api] Assume that v8/include is in the include path for all public headers
Probably easier to use for embedders.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/1749663002

Cr-Commit-Position: refs/heads/master@{#34357}
2016-02-29 11:03:02 +00:00
hablich
020dbfe432 [Release] Update V8 version to 5.1
TBR=machenbach@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1744823002

Cr-Commit-Position: refs/heads/master@{#34347}
2016-02-28 00:55:04 +00:00
fmeawad
567e58390d Reland: Add Scoped Context Info (Isolate) to V8 Traces
This patch adds the newly added support for contexts in V8 Tracing, as well
as use it to mark all the entry points for a V8 Isolate.

Update for reland: The current tracing interface needs to be updated (AddTraceEvent),
but the embedders need to migrate to the new version before removing the old version.
(Reland of: https://codereview.chromium.org/1686233002)

The revert happened because the 2 signatures of the old and new AddTraceEvent where different
so it threw an overload-virtual error on cross arm debug. This issue is temporary, and to solve
it, I added an implementation of the old and new everywhere until the embedder implements the new.

BUG=v8:4565
LOG=N

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/1704253002

Cr-Commit-Position: refs/heads/master@{#34332}
2016-02-26 17:25:30 +00:00
dgozman
66b87c00b8 Introduce MicrotasksCompletedCallback.
This calback is run after an attempt to run microtasks.

BUG=chromium:585949
LOG=Y

Review URL: https://codereview.chromium.org/1731773005

Cr-Commit-Position: refs/heads/master@{#34305}
2016-02-25 19:49:53 +00:00
ulan
b0a804da4f [api] Clarify the limits of ResourceConstraints.
BUG=v8:4781
LOG=NO

Review URL: https://codereview.chromium.org/1740533004

Cr-Commit-Position: refs/heads/master@{#34304}
2016-02-25 19:21:34 +00:00
littledan
7033ae511f Optimize @@species based on a global 'protector' cell
This patch makes ArraySpeciesCreate fast in V8 by avoiding two property reads
when the following conditions are met:
- No Array instance has had its __proto__ reset
- No Array instance has had a constructor property defined
- Array.prototype has not had its constructor changed
- Array[Symbol.species] has not been reset

For subclasses of Array, or for conditions where one of these assumptions is
violated, the full lookup of species is done according to the ArraySpeciesCreate
algorithm. Although this is a "performance cliff", it does not come up in the
expected typical use case of @@species (Array subclassing), so it is hoped that
this can form a good start. Array subclasses will incur the slowness of looking
up @@species, but their use won't slow down invocations of, for example,
Array.prototype.slice on Array base class instances.

Possible future optimizations:
- For the fallback case where the assumptions don't hold, optimize the two
  property lookups.
- For Array.prototype.slice and Array.prototype.splice, even if the full lookup
  of @@species needs to take place, we still could take the rest of the C++
  fastpath. However, to do this correctly requires changing the calling convention
  from C++ to JS to pass the @@species out, so it is not attempted in this patch.

With this patch, microbenchmarks of Array.prototype.slice do not suffer a
noticeable performance regression, unlike their previous 2.5x penalty.

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1689733002

Cr-Commit-Position: refs/heads/master@{#34199}
2016-02-22 21:02:48 +00:00
dgozman
0e9ea48c46 Introduce BeforeCallEnteredCallback.
This new callback is similar to CallCompletedCallback, but is executed before the call has been made.
Added Isolate* parameter to CallCompletedCallback, marking previous one as deprecated.

BUG=chromium:585949
LOG=Y

Review URL: https://codereview.chromium.org/1689863002

Cr-Commit-Position: refs/heads/master@{#34167}
2016-02-19 18:48:46 +00:00
jochen
78f3b2faf5 Mark old SetAccessCheckCallback as deprecated
R=verwaest@chromium.org
LOG=y
BUG=none

Review URL: https://codereview.chromium.org/1711833002

Cr-Commit-Position: refs/heads/master@{#34142}
2016-02-19 08:37:37 +00:00
jochen
f0090eee12 Add comment to use counter def, so it doesn't constantly get out of sync
R=adamk@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1705013002

Cr-Commit-Position: refs/heads/master@{#34101}
2016-02-18 08:06:08 +00:00
machenbach
8934994e36 Revert of Add Scoped Context Info (Isolate) to V8 Traces (patchset #5 id:80001 of https://codereview.chromium.org/1686233002/ )
Reason for revert:
[Sheriff] Breaks arm cross-compile:
https://build.chromium.org/p/client.v8/builders/V8%20Arm%20-%20debug%20builder/builds/7825/

Original issue's description:
> Add Scoped Context Info (Isolate) to V8 Traces
>
> This patch adds the newly added support for contexts in V8 Tracing, as well
> as use it to mark all the entry points for a V8 Isolate.
>
> BUG=v8:4565
> LOG=N
>
> Committed: https://crrev.com/44823c3c6965966c63b7e2e2361d0f2a58d196ea
> Cr-Commit-Position: refs/heads/master@{#34092}

TBR=jochen@chromium.org,fmeawad@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4565

Review URL: https://codereview.chromium.org/1710573002

Cr-Commit-Position: refs/heads/master@{#34095}
2016-02-17 20:30:44 +00:00
fmeawad
44823c3c69 Add Scoped Context Info (Isolate) to V8 Traces
This patch adds the newly added support for contexts in V8 Tracing, as well
as use it to mark all the entry points for a V8 Isolate.

BUG=v8:4565
LOG=N

Review URL: https://codereview.chromium.org/1686233002

Cr-Commit-Position: refs/heads/master@{#34092}
2016-02-17 19:56:33 +00:00
hablich
ed29651bc9 Update V8 version to 5.0
R=machenbach@chromium.org
TBR=danno@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1706753002

Cr-Commit-Position: refs/heads/master@{#34076}
2016-02-17 12:58:25 +00:00
mlippautz
f222240374 [platform] Add NumberOfAvailableBackgroundThreads
The call can be used by the embedder to provide information on the workers
executing background tasks.

BUG=chromium:524425
LOG=N

Review URL: https://codereview.chromium.org/1664203004

Cr-Commit-Position: refs/heads/master@{#33788}
2016-02-05 15:37:37 +00:00
kozyatinskiy
3c3d7e7be8 Revert "Removed support deprecated (//@|/*@) source(URL|MappingURL)="
A lot of deverlopers use deprecated sourceURL syntax. We should add console warning message before removing this.
Original CL: https://codereview.chromium.org/1495633002/

BUG=chromium:558998
LOG=Y
R=yangguo@chromium.org,hablich@chromium.org,adamk@chromium.org

Review URL: https://codereview.chromium.org/1654223003

Cr-Commit-Position: refs/heads/master@{#33709}
2016-02-03 18:45:36 +00:00
jochen
a75b2c8f69 Add the data parameter back to the access check callback
BUG=none
R=verwaest@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1653423002

Cr-Commit-Position: refs/heads/master@{#33699}
2016-02-03 10:02:35 +00:00
vogelheim
d472cf4484 Add native callbacks to FastAccessorAssembler.
(Trying to finish FastAccessorAssembler this week. This should make it easier to pick up the Blink side of this work later on.)

BUG=chromium:508898
SOUNDTRACK=http://youtu.be/i1EG-MKy4so
LOG=Y

Review URL: https://codereview.chromium.org/1620293002

Cr-Commit-Position: refs/heads/master@{#33671}
2016-02-02 11:03:57 +00:00
jochen
ae1f32a1cc Don't schedule second pass callbacks if there are no callbacks
BUG=none
R=haraken@chromium.org,hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1659433002

Cr-Commit-Position: refs/heads/master@{#33658}
2016-02-02 08:59:21 +00:00
littledan
11e8c03f94 Add UseCounters for some nonstandard JavaScript features
This patch adds a UseCounter for each of the following:
- Allowing duplicate sloppy-mode block-scoped function declarations
  in the exact same scope
- for-in loops with an initializer

The patch also refactors some of the declaration code to clean it up and
enable the first counter, and adds additional unit tests to nail down
the semantics of edge cases of sloppy-mode block-scoped function declarations.

BUG=v8:4693,chromium:579395
LOG=N
R=adamk

Review URL: https://codereview.chromium.org/1633743003

Cr-Commit-Position: refs/heads/master@{#33650}
2016-02-01 23:01:59 +00:00
xaxxon
b6c9b70356 Make handle ctors explicit
Without this change, the v8::Local<> constructor will be picked up by the
compiler as an option for an implicit cast for any pointer type.  This leads
to bad error messages when accidentally passing an erroneous pointer type to
a function wanting a Local<> (complains about a pointer assignment in Local<>'s
constructor as opposed to a bad type for the parameter of the function being
called) and also causes ambiguity errors where none should exist when calling
overloaded functions (for example a function taking either a std::string or a
v8::Local<v8::Script> cannot be called with a const char * because the compiler
sees both types as being constructable with a const char *).

R=jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1647833005

Cr-Commit-Position: refs/heads/master@{#33602}
2016-01-29 09:12:51 +00:00
jochen
4a2f3ee800 Add use counters for how often we encounter html comments in scripts
R=yangguo@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1641673002

Cr-Commit-Position: refs/heads/master@{#33561}
2016-01-27 18:19:20 +00:00
jochen
fd20f1659d Adding missing explicit to HandleScope ctors
R=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1644603002

Cr-Commit-Position: refs/heads/master@{#33557}
2016-01-27 15:05:39 +00:00
alph
7068caf5fd Add CollectSample API function to CpuProfiler
It allows embedder to inject a stack sample on demand.

BUG=chromium:579191
LOG=N

Review URL: https://codereview.chromium.org/1631043002

Cr-Commit-Position: refs/heads/master@{#33527}
2016-01-26 20:48:28 +00:00